News Harry Styles Makes Big Screen Debut in 'Dunkirk' -- Watch the New Trailer! By Elisa Osegueda 1:52 PM PST, December 14, 2016 Getty Images Get ready to swoon over Harry Styles.The trailer for Christopher Nolan‘s Dunkirk was released on Wednesday and features the One Direction singer alongside A-list actors Tom Hardy, Mark Rylance, Cillian Murphy and Kenneth Branagh. WATCH: Harry Styles Shows Off His New, Short Haircut on Set of World War II MovieThis is Styles' first feature film, and fans can expect to see him in a whole new light, debuting a polished clean cut look.The film centers on British soldiers aiding in the evacuation of hundreds of thousands of Allied troops during the summer of 1940. RELATED: Harry Styles Channels Rock Legends, Sports Three Different Hairstyles on Edgy New Magazine CoversWatch the full trailer below and keep an eye out for Styles' daring water scene. Dunkirk will hit theaters on July 21, 2017.Harry Styles Shows Off His Short New Haircut, Rocks a Military Uniform -- See The Handsome Pic!